Datasheet LTC3707-SYNC (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator |
| 页数 / 页 | 32 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Supply Current vs Input Voltage. … |
| 文件格式/大小 | PDF / 404 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Supply Current vs Input Voltage. INTVCC and EXTVCC Switch. and Mode (Figure 13)
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LTC3707-SYNC
TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Input Voltage INTVCC and EXTVCC Switch and Mode (Figure 13) EXTVCC Voltage Drop Voltage vs Temperature
1000 200 5.05 INTVCC VOLTAGE 5.00 800 150 4.95 600 4.90 BOTH SWITCH VOLTAGE (V) CONTROLLERS ON 100 TAGE DROP (mV) CC Y CURRENT (μA) 4.85 400 VOL CC SUPPL V 4.80 50 200 EXT AND EXTV EXTVCC SWITCHOVER THRESHOLD CC 4.75 SHUTDOWN INTV 0 0 4.70 0 5 10 15 20 25 30 0 10 20 30 40 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) CURRENT (mA) TEMPERATURE (°C) 3707 G04 3707 G05 3707 G06
Maximum Current Sense Threshold Maximum Current Sense Threshold vs Percent of Nominal Output Internal 5V LDO Line Regulation vs Duty Factor Voltage (Foldback)
5.1 75 80 ILOAD = 1mA 5.0 70 60 4.9 50 50 4.8 (mV) (mV) 40 VOLTAGE (V) 4.7 CC SENSE SENSE V V 30 25 INTV 4.6 20 4.5 10 4.4 0 0 0 5 10 15 20 25 30 0 20 40 60 80 100 0 25 50 75 100 INPUT VOLTAGE (V) DUTY FACTOR (%) PERCENT ON NOMINAL OUTPUT VOLTAGE (%) 3707 G07 3707 G08 3707 G09
Maximum Current Sense Maximum Current Sense Threshold Current Sense Threshold Threshold vs VRUN/SS (Soft-Start) vs Sense Common Mode Voltage vs ITH Voltage
80 80 90 VSENSE(CM) = 1.6V 80 70 76 60 60 50 72 40 (mV) (mV) (mV) 40 30 SENSE SENSE SENSE 20 V V 68 V 10 20 0 64 –10 –20 0 60 –30 0 1 2 3 4 5 6 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 VRUN/SS (V) COMMON MODE VOLTAGE (V) VITH (V) 3707 G10 3707 G11 3707 G12 3707sfa 5
TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Input Voltage INTVCC and EXTVCC Switch and Mode (Figure 13) EXTVCC Voltage Drop Voltage vs Temperature
1000 200 5.05 INTVCC VOLTAGE 5.00 800 150 4.95 600 4.90 BOTH SWITCH VOLTAGE (V) CONTROLLERS ON 100 TAGE DROP (mV) CC Y CURRENT (μA) 4.85 400 VOL CC SUPPL V 4.80 50 200 EXT AND EXTV EXTVCC SWITCHOVER THRESHOLD CC 4.75 SHUTDOWN INTV 0 0 4.70 0 5 10 15 20 25 30 0 10 20 30 40 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) CURRENT (mA) TEMPERATURE (°C) 3707 G04 3707 G05 3707 G06
Maximum Current Sense Threshold Maximum Current Sense Threshold vs Percent of Nominal Output Internal 5V LDO Line Regulation vs Duty Factor Voltage (Foldback)
5.1 75 80 ILOAD = 1mA 5.0 70 60 4.9 50 50 4.8 (mV) (mV) 40 VOLTAGE (V) 4.7 CC SENSE SENSE V V 30 25 INTV 4.6 20 4.5 10 4.4 0 0 0 5 10 15 20 25 30 0 20 40 60 80 100 0 25 50 75 100 INPUT VOLTAGE (V) DUTY FACTOR (%) PERCENT ON NOMINAL OUTPUT VOLTAGE (%) 3707 G07 3707 G08 3707 G09
Maximum Current Sense Maximum Current Sense Threshold Current Sense Threshold Threshold vs VRUN/SS (Soft-Start) vs Sense Common Mode Voltage vs ITH Voltage
80 80 90 VSENSE(CM) = 1.6V 80 70 76 60 60 50 72 40 (mV) (mV) (mV) 40 30 SENSE SENSE SENSE 20 V V 68 V 10 20 0 64 –10 –20 0 60 –30 0 1 2 3 4 5 6 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 VRUN/SS (V) COMMON MODE VOLTAGE (V) VITH (V) 3707 G10 3707 G11 3707 G12 3707sfa 5